Device for inserting cement into pipe joints



Aug. 19 1924. 1,505,613

1.. A. WESTON DEVICE FOR INSERTING CEMENT INTO PIPE JOINTS Filed July 16. 1923 INVENTOR. Le royflfm s Z'ozz.

A TTORNEY.

To all whom it may concern: A. Vnsrorr, a

Patented Aug. 19, 1924.

we srar" LEROY A. wns'ron, or nni/rs, MassAcnnsnrrs.

r arse r are.

nnvrcn non INSERTINGCElVIE-NT rrrro Prrn JoiNrs.

Application filed July 18,

serting and forcing cementinto a pipe j olnt, It relates more particularly to the lIlSQlilOIi of cement into the joint of a sewer or tile pipe although it may be employed for other pipes as for making the jointsin gas and water pipes.

Broadly the invention comprises a recep tacle for receiving a quantity of the cement that-isto be forced into and around the joint with means for directing the cement into the joint and further with means for subjecting the cement to pressure by 1mparting tamping blows thereto- The inveng tion further comprises a device for mixing or stirring the cement in the receptacle to prevent its setting or becoming hard before it is used.

The invention is designed to be used in connection with the structure shown, described, and claimed in my prior Letters Patent of the United States 1,462,077 dated July 17, 1923.

Referring to the drawings: I

Fig. 1 is a top plan view of the device showing the receptacle with the stirrer rodsj therein. 7

Fig. 2 is a vertical sectional view on the line 22 of Fig. 1 showing the plunger rod in the delivery tube, and the tube inserted in the casing which surrounds the pipe joint for receiving the cement, and Q v Fig. 3 is a detail vertical sectional view on the line 33 of Fig. 2 showing the operation of forcing the cement material into and around the pipe joint.

Referring to the drawings in detail:

1 designates the bell end and 2 the spigot end of a pipe joint. 3 designates as a whole the casing surrounding the joint and 4c the upwardly extending tubular part of the easing for inserting the joint forming material, indicated at 5.

Referring now to the present invention. 6 is a conical shaped receptacle in which is placed the cement 7 8 is a downwardly Number I member 8 and into the casing 1923. Serial No. 351,994.

extending dischargetubular member for the cement, the lower end of which'is designed to fit into the tubular part a as shown.

Located in the discharge member 8 is a rod 9 having a ring or piston part 10 secured thereto near its lower end, as shown. 7

This part is of a diameter which is nearly equal to the internal diameter of ,the dis charge tubular member 8. Loosely mounted on the rod 9 is a washer 11 which serves as a valve to prevent the cement material '7 from flowing 'down through the member 8 when the device is not in use, as when it is being carried from one place to another. The upper end of the rod 9! is provided with a handle 12 for the double purpose'of rotat- :ing the rod, and for imparting a vertical reciprocating movement thereto when used for forcing the cement material into and around the joint. Attached to the rodf9 are the two U-shaped stirrer rods 13jand 14 by passing the same through openings 15 and 16 in the rod at right angles'to, each other, as shown. Their upper ends are con nected together'by means. of the cross wires 17 and 18 the ends of .which are looped around the two U-shaped stirrer rods 13 and 14, 19 designates ahandle for carrying the device from place to place. For

strengthening the lower end part 6 of the conical shaped member'G I provide a casing member 20 the upper end ofwhich is attached to the lower end part .6 and its lower end is attached to the tubular bearer iember 8at the point 8, as shown.

The operation as follows: The cement .material 7 is placed in the receptacle 6; it

being assumed that the washer 11 is now closing. the upper or inlet end of the tubular discharge memberftl, as shown; The lower end of the member 8 is now inserted in the upwardly exteridingtubular part 4. of the enclosing casing 3 which surrounds the pipe joint. The operator now lifts the r0d9 by; means'of the handle 12 into the dotted line positions. The piston 10 strikes the washer 11 and carries it away from its seat at the upper end of the discharge member '8' and into the dotted position 11. The cement can now fiow downward through this membei into the casing 3. If it does not readily flow by reason of itsbeing too thick the piston 10 will, when the rod 9 is lowered,

force the cement downward through the 3. The washer 11, being loose on the rod 9 now closes the member 8. By moving the rod 9 up and down with the handle 12 the piston 10 serves to impart pressure and a tamping action to the cement in the casing 3. This has the effect of forcing the cement thoroughly into the casing 3 and completely filling every part of the pipe joint between the spigot and bell end of the pipe ends. It has been found in practice also that the tamping action of the piston and the lower end 9 of the rod serves to forcibly expel practically all of the water from the cement thus doubly insuring a thorough filling of the oint with the cement material. This prevents the formation of any air holes or pockets in the material when the cement has completely hardened.

v By rotating the handle, shown in dotted lines, in Fig. 1, the cement in the receptacle 6 is prevented from becoming hardened or set.

It is to beunderstood that the operatorcontinues the operation until'it is impossible toflforce any more material into the casing 3 and the joint is completely filled. The part 8 is understood to engage the upper end 4 of the part 4: when in use; to for. a tight joint to prevent the escape of the cement.

What I claim is:

1. A device for the purpose described comprising a receptacle to receive the joint forming material, a discharge member therefor; a plunger rod, a washer loosely 'mounted on the rod for normally closing the discharge member, a piston on the rod and normally located in the discharge member for imparting impact or pressure blows to the material in said member, and means for agitating the material in the receptacle.

2. 'A device for forcing oint forming material into and around a pipe joint, comprising a conlcal shaped receptacle to reoelve ing a conical shaped receptacle to receive the material, a discharge tube therefor, a plunger rod in the tube, a piston thereon for forcing the material through the tube, means for permitting the material in the receptacle to enter the tube when the rod is moved inone direction and to close thetube when the rod is moved in the opposite direc tion, said means including a part loosely mounted on the rod and designed to normally engage the inlet end of the tube to close the same but is engaged by the piston when the rodv is drawn upward to move it from the inlet end of the tube to permit the material in the receptacle to enter the tube,

whereby when the plunger rod is operated valve engaging means serving when the rod is operated, to force the material which passes the valve into the tube, to force the material through the tube.

5. The combination with a receptacle to,

receive cement material, an agitator device therein comprising a rotatable rod and arms on the rod for engagingthe material for mixing the same when the rod is rotated.

6. A device for the purpose described comprising a cement receiving receptacle having a conical shaped outlet end, a dis charge tube attached to. said end, a rod in the tube, means on the rod forv forcingtlie material through the tube and for controlling the supply to the tube from the receptacle, said means including a washer like part which is loosely mounted on the red but automatically seats in the conical shaped outlet'end to shut ofi the flow of material from the receptacle when therod is moved downward, said conical shaped outlet end serving to permit the said means on the rod to pass freely into the tube.

LEROY A. wnsron. 

